The whole system is broken, and it's not just to do with MFTS. Ascent can't keep instructors, but when you see what they have to go through, you will understand why. An ex-colleague who worked for them for two years before quitting mentioned in the modern risk-averse RAF, it was easier to get a B747 with 400 passenger from London to Hong Kong that it is to get a Prefect airborne from Cranwell for an hour long instructional sortie.